Non linear scaling of reliability values in a turbo decoder system
US7185267B2 · kind B2 · utility
2Cited by
4References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2002 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Dec 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/2957
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A decoder system for concatenated codes such as turbo codes, comprises at least two component decoders mutually coupled through a reliability value handler for handling reliability values. The reliability value handler comprises a scaling unit for providing non linearly scaled reliability values. This reduces the reliability values provided by the component decoders, such that the non linearly scaled reliability values better reflect the genuine reliability information or Log Likelihood Ratio (LLR) in a practical realization of the decoder system generally having sub optimal component decoders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.